A Researcher Believes That a Variable Is Poisson Distributed Across

Multiple Choice

A researcher believes that a variable is Poisson distributed across six categories.To test this, the following random sample of observations is collected: $$\begin{array} { | l | l | l | l | l | l | l | } \hline \text { Categary } & 0 & 1 & 2 & 3 & 4 & \geq 5 \\\hline \text { Observed } & 7 & 18 & 25 & 17 & 12 & 5 \\\hline\end{array}$$ Using $\alpha$ = 0.10, the critical value of chi-square for the data is _______.

A) 9.236
B) 7.779
C) 13.277
D) 12.89
E) 1.064